Precalculus (6th Edition)

Published by Pearson
ISBN 10: 013421742X
ISBN 13: 978-0-13421-742-0

Chapter 3 - Polynomial and Rational Functions - 3.2 Synthetic Division - 3.2 Exercises - Page 325: 6

Answer

$74$

Work Step by Step

The last given equation has, on the RHS, a product of factors $(x-2)\cdot q(x)+r(x)$ Since $x-2$ is zero when $x=2$, the RHS equals $74$ when $x=2.$ --- Alternatively, we can interpret the second equation as $f(x)=g(x)\cdot q(x)+r$, obtained by the division algorithm - special case. Since we divided $f(x) $ with $(x-2)$, we can apply the Remainder theorem: $f(2)=r=74$
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